  // pages/book-detail/book-detail.js
  import {
    BookModel
  } from '../../models/book.js'
  import {
    LikeModel
  } from '../../models/like.js'
  const bookModel = new BookModel,
    likeModel = new LikeModel;
  Page({

    /**
     * 页面的初始数据
     */
    data: {
      comments: [],
      book: null,
      likeStatus: false,
      likeCount: 0,
      posting: false
    },

    /**
     * 生命周期函数--监听页面加载
     */
    onLoad: function(options) {
      wx.showLoading({})
      const bid = options.bid;
      const detail = bookModel.getDetail(bid);
      const comments = bookModel.getComments(bid);
      const likeStatus = bookModel.getLikeStatus(bid);

      Promise.all([detail, comments, likeStatus])
        .then(res => {
          console.log(res);
          this.setData({
            book: res[0],
            comments: res[1].comments,
            likeStatus: res[2].like_status,
            likeCount: res[2].fav_nums
          })
          wx.hideLoading()
        })
      // detail.then(res => {
      //   this.setData({
      //     book: res
      //   })vvs
      // })

      // comments.then(res => {
      //   this.setData({
      //     comments: res.comments
      //   })
      // })

      // likeStatus.then(res => {
      //   this.setData({
      //     likeStatus: res.like_status,
      //     likeCount: res.fav_nums
      //   })

      // })
    },

    // 点赞
    onLike: function(e) {
      const like_or_cancel = e.detail.behavior;
      likeModel.like(like_or_cancel, this.data.book.id, 400);
    },

    // 打开输入框
    onFakePost: function(e) {
      this.setData({
        posting: true
      })
    },

    onCancel: function(e) {
      this.setData({
        posting: false
      })
    },

    onPost: function(e) {
      const comment = e.detail.text || e.detail.value;

      if (comment.length > 12) {
        wx.showToast({
          title: '短评最多12个字',
          icon: 'none'
        })
        return
      }

      bookModel.postComment(this.data.book.id, comment)
        .then(res => {
          wx.showToast({
            title: '+1',
            icon: "none"
          })

          this.data.comments.unshift({
            content: comment,
            nums: 1
          })

          this.setData({
            comments: this.data.comments,
            posting: false
          })
        })
    },
    /**
     * 生命周期函数--监听页面初次渲染完成
     */
    onReady: function() {

    },

    /**
     * 生命周期函数--监听页面显示
     */
    onShow: function() {

    },

    /**
     * 生命周期函数--监听页面隐藏
     */
    onHide: function() {

    },

    /**
     * 生命周期函数--监听页面卸载
     */
    onUnload: function() {

    },

    /**
     * 页面相关事件处理函数--监听用户下拉动作
     */
    onPullDownRefresh: function() {

    },

    /**
     * 页面上拉触底事件的处理函数
     */
    onReachBottom: function() {

    },

    /**
     * 用户点击右上角分享
     */
    onShareAppMessage: function() {

    }
  })